Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – By stairway having steps forming an endless member
Patent
1994-03-01
1994-10-25
Dayoan, D. Glenn
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
By stairway having steps forming an endless member
B66B 2312
Patent
active
053580893
ABSTRACT:
An escalator or passenger conveyor step is formed from a polymer-fiberglass composite which is injected into a mold cavity conforming to the configuration of the step. The preferred polymer is a polyethylene terephthalate, and the composite has a significant amount of a glass fiber reinforcement component incorporated therein. The step is provided with tread-stiffening ribs which support the underside of the tread and are interconnected with the step struts on which the step chain axle and trailer roller axles are mounted; and an inverted arch assembly beneath the edge of the step distal of the step riser.
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